Update app.py

app.py

@@ -651,12 +651,12 @@ def chatbot_response(user_query, chat_history, state_bookmarks):
     """
     if not GROQ_API_KEY:
         logger.warning("GROQ_API_KEY not set.")
-        return chat_history + [("System", "⚠️ API key not set. Please set the GROQ_API_KEY environment variable in the Hugging Face Space settings.")]
+        return chat_history + [{"role": "system", "content": "⚠️ API key not set. Please set the GROQ_API_KEY environment variable in the Hugging Face Space settings."}]
 
     bookmarks = state_bookmarks
     if not bookmarks:
         logger.warning("No bookmarks available for chatbot")
-        return chat_history + [("System", "⚠️ No bookmarks available. Please upload and process your bookmarks first.")]
+        return chat_history + [{"role": "system", "content": "⚠️ No bookmarks available. Please upload and process your bookmarks first."}]
 
     logger.info(f"Chatbot received query: {user_query}")
 
@@ -679,7 +679,7 @@ def chatbot_response(user_query, chat_history, state_bookmarks):
         if not matching_bookmarks:
             response_text = "No relevant bookmarks found for your query."
             logger.info(response_text)
-            return chat_history + [("System", response_text)]
+            return chat_history + [{"role": "assistant", "content": response_text}]
 
         # Format the response
         bookmarks_info = "\n\n".join([
@@ -709,7 +709,7 @@ Provide a concise and helpful response.
         )
         answer = response['choices'][0]['message']['content'].strip()
         logger.info("Chatbot response generated")
-        return chat_history + [("User", user_query), ("System", answer)]
+        return chat_history + [{"role": "user", "content": user_query}, {"role": "assistant", "content": answer}]
 
     except openai.error.RateLimitError as e:
         wait_time = int(e.headers.get("Retry-After", 5))
@@ -719,7 +719,7 @@ Provide a concise and helpful response.
     except Exception as e:
         error_message = f"⚠️ Error processing your query: {str(e)}"
         logger.error(error_message, exc_info=True)
-        return chat_history + [("System", error_message)]
+        return chat_history + [{"role": "assistant", "content": error_message}]
 
 def build_app():
     """